dawson and g



A. T. DAWSON-AND G. T. BUCKHAM.

GUN MOUNTING.

APPLI'CATION FILED SEPT. 6, 191a.

Patented Dec. 16,1919.

3 SHEETS-SHEET 1.

Inventors,

A. T. DAWSON AND G. T. BUCKHAM.

GUN MOUNTING.

APPLICATION FILED SEPT. 6, l9l6.

Patented Dec. 16,1919.

1?,SHEETS-SHEET 2.

In ventors,

A. T. DAWSON AND T. BUCKHAM.

GUN MOUNTING.

APPLICATION FILED SEPT. 6. I916. I 1,324,800. Patented Dec. 16,1919.

3 SHEETS-SHEET 3- Inventar g ARTHUR TREVOR. DAW'SON AND GEORGE BUCKHAM, 0F WESTMINSTER,

LONDON, ENGLAND, ASSIGNQRS TO VICKERS LIMITED, OF WESTMINSTER,

LONDON, ENGLAND.

'To all 'tvhom it may concern.

Be itlrn'own that we, Sir ARTHUR TREVOR DAWSON, knight, and GEORGE THOMAS BUcK- HAM, both subjects of the King of Great Britain, residing at Vickers House, Broadway, l Vestminster, in the county of London, England, have invented certain new and useful Improvements in or Relating to Gun- Mountings, of which the following is a specification.

This invention relates to gun mountings of the kind capable of swinging about a iorizontal or approximately horizontal axis which is transverse to the axis of the gun and situated a substantial distance from a transverse plane containing the training axis of the gun so that the gun and its mounting as a whole can be readily displaced in a downward direction from the firing position and housed, when not in use,

'within a chamber formed forv example in the superstructure of a submarine or submersible boat. The type of mounting to which the invention relates is thus distinct from that type in which the mounting proper (that is to say the part with respect to which the gun moves in training) does not move with the gun during the displacement of the latter toand from its housed position.

According to the present invention the aforesaid horizontal axis is so situated in relation to the chamber and the mounting as a whole is so constructed that the latter during its downward housing displacement moves through an angle substantially less than a right-angle, this housing operation taking place without the necessity of inverting the gun.

In order that the said invention may be clearly understood and readily carried into effect, we will describe the same more fully with reference to the accompanying drawings, in which 7 Figures 1 and 2 are sectional side elevations showing more or less diagrammatically two constructional forms of the invention.

Fig. 3 is a section taken approximately on the line 1, 1 of Fig. 2.

Figs. 4 and 5 are respectively a side sectional elevation and a sectional end elevation showing on an enlarged scale the manner in which the gear illustrated by Fig. 1 may be operated.

Fig. 6 is a view similar to Figs. 1 and 2 Specification of Letters Patent. Patented Deb, Application filed September 6, 1916. Serial No. 118,653.

- closed by a watertight door C.

GUN-MOUNTING.

showing another constructional form of the invention. I I

Fig. 7 is a plan of Fig. 6 but with the gun and its mounting in the raised or firing position and .mounting. G is the chamber in the superstructure of a submarine boat, for the reception of the gun and its mounting when in the housed position. This chamber may be H D is the aforesaid pivot pin which passes through the forward part of the base B.

In the examples shown the gun mounting .is of vthe cone type with worm and worm wheel training and elevating gears, the cone B beingbuilt up of steel plate. This cone moves with the gun in training and a ball or roller path may be interposed between its lower part andthe base B of the mounting.

Referring to Figs. 1, f and 5, the gear for raising and lowering the mounting comprises two screw threaded shafts E, E each engaging with a nut E pivotally mounted at e on the rear part of the base B. Each shaft is carried by a bracket 6 pivoted to the stationary structure and is operated through suitable shafts and bevel or other gearing from the interior of the'boat. In Figs. 2 and 3 the screwthreaded shafts are replaced by two fiXedrac-ks E E with which mesh pinions c 6 operated through worm gearing from a shaft B This shaft may be driven by bevel wheels from the pivot D which in this case constitutes a shaft actuated from the interior of the boat by bevel gearing and a shaft as will be readily understood by reference to Fig. 5.

Referring to Figs. 4 and 5 it will be seen that the two screw threaded shafts E, E are Fig. 8 is asection taken approximately on 7 arranged one at each side of the base B.

dle f are provided for reversing the direc-' tion of movement of the shafts simultaneously without necessitating the reversal of the motor. For this purpose a rod f operated by the handle f is connected to 7 lifted directly by hand.

In 'Figs. 6,"7 and 8 the mounting is op erated directly instead of through gearing by a pneumatic or hydraulic press or cylin der F whose ram or piston rod F is connected to an arm or bracket B carried by the base of the mounting. This press or cylinder also acts as a balancing recuperator, as much as possible oi the unbalanced weight of the mounting being balanced, the pressure of the air or liquid being increased or decreased as required, for raising or lowering the mounting.

It is to be understood that any other suitable form of power or hand-operated gear may be employed for raising and lowering the mounting, and that means would be provided for locking the mounting in either of its aforesaid positions.

Although we have described the pivot pin D as being situated in front of a transverse plane containing the training axis of the gun, it is to be understood that it maybe situated to the rear of the said plane, the mounting then swinging in a forward direction during the housing operation.

What We claim and desire to secure by Letters Patent of the UnitedStates is 1. The combination with the training and the non-training portions of a gun mounting, of a chamber in Which the gun and mounting are adapted to be housed and means for pivoting the non-training portion oi the mounting so that during the housing displacement of the mounting as a whole it moves through an angle substantially less than .a right angle without the necessity of inverting the gun.

The combination with the training and non-training portions of a gun mounting, of a chamber in which the gun and mount- 'ing are adapted to be housed and apivot for said non-training portion of the "mounting, this pivot being arranged a substantial distance from a transverse plane containing the training aXis of the gun, themounting as a whole movin about this pivot during the housing of the gun through an angle substantially less than a right angle W1thout the necessity of inverting the gun.

3. The combination with the training and the non-training portions of a gun mounting, of a chamber in whichthe gun and mounting are adapted to be housed, and a pivot for said non-training portionof the mounting this pivot being arranged a sub stantial distance in front of a transverse plane containing the training axis of the gun, the mounting as a whole moving about this pivot during the housing of the gun through an anglesubstantially less than a right angle Without the necessity of inverting the gun.

4. The combination with the training and the non-training portions of a gun mounting, of a chamber in which the gun and mounting are adapted to be housed, means for pivoting the non-training portion of the mounting so that during the housing displacement of the mounting as a whole it moves through an angle substantially less than a-right angle without the necessity of inverting the gun and a pressure fluid Inotor for displacing the mounting to and from its housing position.

ARTHUR TREVOR DAl/VSON. GEORGE THOMAS BUGKHAM.

Witnesses:

J vo. R. GASWELL,

GERTRUDE l/VHYTE. 

